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Prince Rupert's drop
- pnemonic 3y agoVideos of people breaking these make my TEETH HURT. No I have not been taking my meds, why do you ask?
- feydaykyn 3y agoIt's funny, I've just discovered this drop two days ago, because it's mentioned at the end of Book 5 of Dungeon Crawler Carl (https://www.goodreads.com/series/309211-dungeon-crawler-carl https://www.goodreads.com/series/309211-dungeon-crawler-carl) A coworker shared this video about the artisan who makes theses drops https://www.youtube.com/watch?v=C1KT8PS6Zs4&pp=ygURc21hcnRlciBldmVyeSBkYXk%3D https://www.youtube.com/watch?v=C1KT8PS6Zs4&pp=ygURc21hcnRlc...
- skellera 3y agoShout out to Destin from SmarterEveryDay for his love of PRDs. Learn about and see how it’s made – https://youtu.be/xe-f4gokRBs https://youtu.be/xe-f4gokRBs Encasing a shattering drop in glass –https://youtu.be/C1KT8PS6Zs4 https://youtu.be/C1KT8PS6Zs4 The process the team uses in the second video to freeze the break in glass is pretty awesome! (If you’re into that kind of thing)
- justsee 3y agoLast time this was discussed on HN, someone raised the artist's approach to failure as a rich space for discovery, which was nicely put by him at this point in the video: https://www.youtube.com/watch?v=C1KT8PS6Zs4&t=1619s https://www.youtube.com/watch?v=C1KT8PS6Zs4&t=1619s
- skellera 3y agoYeah, I love it. Learn about the entire process and keep going rather than cutting short after a perceived failure.
- rcxdude 3y agoI think it is contextual, but it's a useful approach in many cases: it's effectively a sunk cost vs value of information analysis: if you've already sunk most of the cost into something and there's a problem which means it isn't going to work, then the potentially valuable information from learning about the next steps is probably pretty cheap, and reduces the risk that the investment in the next attempt isn't wasted. On the other hand, if you know it's not going to work and the next steps involve a lot of extra time/material investment but aren't going to tell you much, then it's probably a good idea to throw the current attempt away and try again.
- NickHoff 3y agoThere's also this one. https://www.youtube.com/watch?v=F3FkAUbetWU https://www.youtube.com/watch?v=F3FkAUbetWU He shoots the Prince Rupert's drop with a bullet. The bullet wins. In high speed, you can see the bullet splat against the glass and break into shards, long before the glass breaks. Really neat.
- deepzn 3y agoThe name alone, but even the description sounds like a special item in an RPG. > These droplets are characterized internally by very high residual stresses, which give rise to counter-intuitive properties, such as the ability to withstand a blow from a hammer or a bullet on the bulbous end without breaking, while exhibiting explosive disintegration if the tail end is even slightly damaged.
- Yhippa 3y agoCrazy seeing this here. Someone posted this on the subreddit for The Three Body Problem books.
- dmbche 3y agoWhat was the relation? The strong force matter drops?
- m3kw9 3y agoJust the shape is same as the droplet. Strong forces would be enough to kick that much Ass and not need to be like Rupert’s drop
- k_roy 3y agoThere is definitely limited overlap between Reddit and here.... /s
- DoreenMichele 3y agoThis exact same article has appeared on HN repeatedly for at least 14 years: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&query=prince%20Rupert%27s%20drop%20Wikipedia%20&sort=byPopularity&type=story https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...
- deepzn 3y agoThis is beautiful on his site - https://www.calbreed.com/prince-ruperts-drop/ https://www.calbreed.com/prince-ruperts-drop/ The Beauty in Tension …that glass bubble That finds philosphers such trouble Whose least part crackd, the whole does fly And wits are crack’d, to find out why. Hudibras by Samuel Butler, 1663 (on the mystery of the Prince Rupert’s Drop)
- deepzn 3y ago[flagged]
- Natsu 3y agoIt's funny because you don't need the drop shape to demonstrate this at all. Any random piece of tempered glass demonstrates the same thing if you know where the stress is. You can hit a shovel against the flat side of a piece of tempered glass and not break it because the shovel is too large & flat. But you chip the corner, or use a small tool like a punch break, and the whole thing will pop. Now, use the edge of the shovel against the edge of the glass and you'll have a lot more luck breaking it.
- unusualmonkey 3y agoA Prince Rupert's drop can withstand a bullet - how would you demonstrate this with a random piece of tempered glass?
- Natsu 3y agoI mean, I only said it could withstand a shovel's flat side and a good whack. I never tried shooting any glass, but I have personally had reason to whack a few tempered lites with a shovel when they wouldn't break and can personally attest to how surprisingly hard it can be compared to just chipping a corner against another piece of glass. Another odd thing is that when two pieces chip at the corners, I've only ever seen one of them break. Somehow the other piece always seems to survive, though it normally gets scratched up enough that it's tossed out anyhow.
- unusualmonkey 3y agoSo then it doesn't really demonstrate what a Prince Rupert's drop can do...
- Natsu 3y agoNot to the same extent, no, but you can still see it hit hard in one way and shatter under the slightest tap in another way which was all I was trying to say.
- foobarbecue 3y ago
- dang 3y agoRelated: Prince Rupert's Drop vs Molten Glass [video] - https://news.ycombinator.com/item?id=35591019 https://news.ycombinator.com/item?id=35591019 - April 2023 (60 comments) Prince Rupert’s Drop - https://news.ycombinator.com/item?id=31781678 https://news.ycombinator.com/item?id=31781678 - June 2022 (1 comment) Mystery of Prince Rupert's Drop at 130,000 fps - https://news.ycombinator.com/item?id=5606228 https://news.ycombinator.com/item?id=5606228 - April 2013 (2 comments) Prince Rupert's Drop - https://news.ycombinator.com/item?id=5550646 https://news.ycombinator.com/item?id=5550646 - April 2013 (13 comments) The Curious Properties of a Molten Glass Blob Dropped in Cold Water - https://news.ycombinator.com/item?id=5440179 https://news.ycombinator.com/item?id=5440179 - March 2013 (5 comments) Prince Rupert's Drop - https://news.ycombinator.com/item?id=486103 https://news.ycombinator.com/item?id=486103 - Feb 2009 (2 comments)
- stephen_g 3y agoUnfortunately the link on the third post now seems to go to an SEO spam site, but the Web Archive seems to have the original - https://web.archive.org/web/20170303072943/http://richannel.org/mystery-of-prince-ruperts-drop-at-130000-fps https://web.archive.org/web/20170303072943/http://richannel.... which was a blog post featuring this YouTube video - https://m.youtube.com/watch?v=xe-f4gokRBs https://m.youtube.com/watch?v=xe-f4gokRBs
- dang 3y agoThanks! I added that info to the top of that thread.
- galaxyLogic 3y agoPrince Rupert Awakes: https://youtu.be/zHIapFdzRM8 https://youtu.be/zHIapFdzRM8
- philjohn 3y agoThe Finnish Hydraulic Press guy had a Reel recently showing how it just would not crush.
- limbicsystem 3y agoThat's actually what prompted the submission. I was amazed :)
- ftxbro 3y agoarticles on rotation like this could go on some faq-like list somewhere instead of frontpage maybe the list could be a tab at the top
- IgorPartola 3y agoApparently if you use liquid soap instead of water you can get a drop with virtually no tail. Then the only way to really break it is by hitting it with a Nokia phone.